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Feb 3, 2013 · Future research should explore modeling soil organic matter dynamics using substrate and spatial limitations, perhaps as a simpler alternative to the current box model approaches, which likely reflect the portions of the soil that are substrate-limited, or the time required to degrade all plant inputs through the microbial “mill”, and the relationship between microbial community ...
- Gerd Gleixner
- 166
- 2013
- 03 February 2013
Jan 1, 2007 · Most models of soil organic matter dynamics begin by modeling the decay of litter at the soil surface. The models assume that plant material contains a readily decomposable fraction (typically water-extractable material—sugars, soluble phenols, and amino acids) and a more resistant fraction containing cellulose and lignin (see Chap. 12 for additional information on C inputs to soil).
- Alain F. Plante, William J. Parton
- 2007
Nov 23, 2015 · Moreover, organic matter retains nutrients as well as pollutants in the soil, which improves plant growth and protects water quality 2. Soils are also an important source of aquatic carbon, with ...
- Johannes Lehmann, Markus Kleber
- 2015
Jul 1, 2016 · This review covers historical perspectives, the role of plant inputs, and the nature and dynamics of soil organic matter (SOM), often known as humus. Information on turnover of organic matter components, the role of microbial products, and modeling of SOM, and tracer research should help us to anticipate what future research may answer today's challenges.
- Eldor A. Paul
- 2016
Oct 5, 2011 · This in turn has led to a new view of soil-organic-carbon dynamics—that organic matter persists not because of the intrinsic properties of the organic matter itself, but because of ...
Jun 19, 2015 · Discrete (multi)exponential models describe organic matter decomposition by one or a sum of several exponential decay functions which represent differing reactivity classes [Jenny et al., 1949; Olson, 1963; Lousier and Parkinson, 1976; Currie et al., 2010]. The reactivity in each class is assumed to remain stable over time, allowing exponential decay constants to be fitted.
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Jul 30, 2018 · Soil organic matter (SOM) turnover increasingly is conceptualized as a tension between accessibility to microorganisms and protection from decomposition via physical and chemical association with minerals in emerging soil biogeochemical theory. Yet, these components are missing from the original mathematical models of belowground carbon dynamics and remain underrepresented in more recent ...
